Pipe-cutting machine



(No Model.)

W. H. GARLAND.

PIPE CUTTING MACHINE.

No. 145,138. Patented .13.11.20, 1891.

YME naam: venas co., woruruo., wnswmm'ou, c. c.

UNTTED STATES PATENT OFFICE.

lVlLLlAM Il. GARLAND, OF SOllIEl'-VILLE, MASSAOIlUSETTS, ASSIGNOR OFrTHREE-FORTI'IS TO JAMES NICOL, OF SAME PLACE, AND JAMES lV. llRlNE ANDGEORGE A. LLOYD, BOTH OF ARLIN iTO, MASSAOHUSWTS.

PIPE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 445,138, dated January20, 1891.

Application tiled April 19, 1890. Serial No. 348,683. (No modeL) To allwhom it may concer/t:

De it known that l, WILLIAM Il. GARLAND, of Somerville, county ofMiddlesex, State of Massachusetts, have invented an Improvement inPipe-Cuttin0A Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters and figures on the drawings rep resenting like parts.

This invention has for its object the production of a machine by whichto readily and easily cut off cast-iron and other pipes. This work isnow commonly done in the street and other places by means ofeold-chisels and at considerable expense both in time and labor.

The machine herein to be described is readily portable, and may bequickly applied to and cut off the pipe to the desired length.

My improved pipecutting machine consists, essentially, of a lframe orsupport. having` clamps to hold the pipe and a rotating wheel havingmounted thereon cutter-carriers provided with cutters which are made tomove gradually toward the center of the pipe, the said wheel, as hereinshown, being adapted to be rotated by a crank having a suitable pinion.

Figure l, in front elevation, represents a pipe-cutting machineembodying my invention, the same being shown as applied to a piece ofpipe; Fig. 2, a section of Fig. l in line a: and Fig. 3 a detail showingpart of the carrier and the cutter therein.

My improved machine consists, essentially, of two side plates or framesA A', each having a circular hole to receive one end b of the hub b ofthe toothed Wheel B, the said wheel being herein shown as composed oftwo semicircular parts having anges which are suitably united by boltsor otherwise. This wheel may be in two or more sections, as desired, itbeing made in sections to facilitate placing it in position in the sideframes. The side frames A A have at their upper ends suitable bearingsfor a shaft C, having a pinion c, which engages the teeth of the gear B,the said shaft at its upper ends being squared or otherwise shaped forthe application thereto of suitable handles e by which to rotate thesaid shaft and the gear B.

The side pieces A A are provided with suitable clam ps, as D D', to actupon the pipe and confine the same in proper central position withrelation to the center of rotation of the toothed gear B. The clamps D,both alike, are herein represented as provided with a series of holes,as 2, for the reception of a bolt 3, by which to confine the clamp inproper position, the said holes being made at such distance apart as toadapt the clamp shown to four different sizes of pipe; but it is obviousthat instead of holes the said clamp may have a long slot d3, asrepresen ted in the clamp D; but the holes are considered the moreconvenient, as they insure greater accuracy as to the position of theclamp D, and obviate the necessity of the user making measurements ortaking special pains to secure just the proper position for the clamp Dfor the particular pipe to be cut off.

The clamp D is connected to the clamp D by bolts d, extended throughears in the said clamps, the rotation of the said bolts, which may be ofany usual or suitable kind, enabling the lower clamp D to be brought upfirmly in contact with the side of the pipe, the bolt d2 in the slot d3of the clamp heilig used to aid in securing the clamp D in its adjustedposition.

The rotating gear or wheel B, as herein shown, has pivoted upon it at ein an adjustable mahner a cutter-carrier E,the inner end of which issuitably shaped to receive the shank ofa cutting-ott tool, as e', thesaid shank being preferably contained in a box c2, and is herein shownas held in adjusted position by a set-screw e3.

The adjustment of the outer end of the cutter-carrier E by moving thebolt e up and down in the slot c4 enables the cutting-edge of the toolto be always brought into proper central line, in order that it may cutfreely into the pipe, as will be understood from those conversant withthe action of cutting-o tools, and the inner or cutter-carrying end ofthe said carrier E has a bolt E moving in a radial slot in said wheel B,(indicated by dotted lines in Fig. 2,) the said bolt being clampedagainst the wheel B to prevent the cutter from jump inv.

IOO

The pipe P to be eut off will be suitably supported upon a horse, bench,or otherwise, and the tool herein described will be placed upon it and'clamped on the pipe in position, as it Will be obvious that this may bedone readily, owing to the fact that the rotating wheel B is made insections, so that it may be bolted together, and so, also, it will beunderstood, that the clamp is made in sections and f bolted together, soas to be readily separable and be removed from the pipe or applied tothe pipe at any point between its ends. The operator will then rotatethe shaft C, and thereby rotate the gear or Wheel B, causing the same totravel about the pipe, the tool e cutting into the periphery of thesame.

Itis obvious that the tool must be fed gradually toward the center ofthe pipe in order to cut the same through, and to accomplish this I haveprovided a feed-screw f, which is set into a threaded block 6, having asmall projection,also provided with ascrew-thread, the said projectionreceiving a nut?, the projection being adapted to be adjusted toward andfrom the center of rotation of the wheel B in the slot referred to anddesignated by dotted lines in Fig. 2. The head 8 of the screw is hereinrepresented as provided with a series of pins or projections, one ofwhich during each rotation of the wheel B acts upon a snitable'plate, asg, secured to the side frame A.

In operation the block G is adjusted upon the wheel B according to thesize of the pipe to be cut, and the feed-screw is screwed down so thatits inner end acts upon the cutter-can rier about as represented in Fig.2, and thereafter during each rotation of the wheel B the feed-screw isturned a little, so as to cause the said feed-screw to gradually forcethe cutter farther and farther into the pipe.

I do not desire to limit my invention tothe particular construction ofthe feed device for the cutter herein shown, as the same may be of anyusual construction, and its head may be shaped in any usual manner so asto be acted upon and enable the feedscrew to be rotated at the desiredspeed.

YVhile I prefer to use teeth between the shaft C and the periphery ofthe wheel B, in order to effectthe rotation of the latter wheel, I donot desire to limit this invention to the eXactshape of the teeth, norto the particular connecting means between the shaft C and the wheel Bwhereby the latter is rotated.

I claim*- I. In a machine for cutting olf pipe, a rotating wheel and api vot-ed cutter-Carrier made adjustable thereon, an adj ustable pivotfor said cutter-carrier, whereby the cutting-edge of the tool is broughtinto proper central line, a radial slot in said wheel, a bolt at theinner end of said cutter-carrier adapted to enter said slot and to beclamped against the wheel to prevent the cutter from jumping, and acutter, and a feed-screw for moving the free end ol' the saidcutter-carrier, combined with clamps to clamp the pipe to becut,`substan tially as described.

2. In a machine forcutting oit pipe, the side frames and the rotatingdivided or separable wheel mounted therein and carrying a cutter,combined with adjustable clamps D D', having ears, bolts extendedthrough said ears and connecting the clamps, and means, as dcscribed,for rigidly securing the clamps to the side frames in adjustablepositions, to operate substantially as described.

3. A pipe-cutting` machine containing the following instrumentalities,viz: side pieces,

a slot-ted rotating wheel having bearings in and supported by andbetween the said side pieces, a plvoted cutter-carrier E, provided witha cutter vertically adjustable therein, a threaded block having aprojection to enter a slot in the wheel, a feed-screw carried by saidblock, means for holding said block in adjusted position and foradjusting the pivot of the cutter-carrier, a bolt at the inner end ofthe cutter-carrier, a radial slot in the wheel in which said bolt entersand means to clamp t-he bolt against the wheel, clamps to hold incentral position the pipe to be cut, and means for rotating the saidwheel, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

lVILLIAM ll. GARLAND.

lVitnesses:

GEO. W. GREGORY, EMMA J. BENNETT.

